#11521: Memleak when resolving the action of Integers on an Elliptic Curve
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Reporter: jpflori |
Owner: robertwb
Type: defect |
Status: needs_work
Priority: major |
Milestone: sage-4.8
Component: coercion |
Keywords: sd35
Work_issues: Understand why a weak key dictionary is not enough |
Upstream: N/A
Reviewer: |
Author: Simon King
Merged: |
Dependencies: #11900
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Changes (by SimonKing):
* work_issues: => Understand why a weak key dictionary is not enough
Comment:
I have attached a new patch version. It fixes the segfault I mentioned.
However, it also does ''not'' fix the memory leak.
The difference between the two versions is: The new patch still uses weak
references to the key of the cache, but a strong reference to the value
(i.e., the homset).
The homset has a reference to domain and codomain, which constitute the
cache key. Thus, I expected that it does not make any difference whether
one has a strong or a weak reference to the homset. But I stand corrected.
That needs to be investigated more deeply.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11521#comment:50>
Sage <http://www.sagemath.org>
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